Led High-power Street Lamp TechnologyLED street lamps to large-scale application, the general notion that still needs some time,. but I really think that LED lights technology matured. Welcome to correct me. To say LED street lamps (which is actually all LED lighting) is not reason for large-scale application are the following three: 1, LED street lamps light efficiency has not yet reached to the level of sodium; 2, the life of LED street lamps; 3, LED street lamps photometric is not ideal. Talked about LED street lamps, many people will pointed out that LED of display color index LED controller than sodium of display color index high many, and can reduced LED street lamps of as of standard, appeal separate for LED street lamps amendment standard, actually, from macro Shang see sent hope Yu amendment standard is does not reality of, and I think existing of road lighting standard no may also no necessary amendment. to makes LED replaced other light became reality, on only by LED lighting area of people themselves efforts has. Luminous efficiency problems: First, sodium of light effect does is high, I see some better of sodium products units power lumens number are in 110 above, and currently do of good of LED also on in 90Lm/W around, also no energy saving. but, if comparison lamps of efficiency, conclusions on does not as has. because general light are is 360 of Omni-directional uniform glow, and LED glow has directional, usually is 180 of within, so difference, Street light is not the same. made of sodium lamp or conventional light Street lamp lamps light efficiency is typically around 60%, LED street lamps can more easily reach 90%. According to the weighted, effective light for the 66Lm/W sodium street lamps and LED Street lamp light can effectively reach 80Lm/W. Second, since it is a street lamp, is of course the only fall on pavement of light is needed, that will further see the flux on the road, to minimum national standards H=Weff, for example, better utilization coefficient of sodium lamps of 0.3,[url=]LED controller [/url] if LED utilization coefficient of 0.8, then to the current level of LED luminous efficiency, A 110W of LED street lamps on full can replaced 250W of sodium has, if considered to actual engineering cost, factors, usually in accordance with H=1.2Weff to design words, to 100W of LED street lamps replaced 250W of sodium is at this stage on can implementation of. to reached 60% so of energy saving level has has enough of energy saving effect has. to reached 0.8 of using coefficient, this is see LED street lamps design personnel distribution light of Foundation, actually is also does not difficult. Life issues: If was told you, they of LED lamps of life has 100,000 hours or 50,000 hours, and 30,000 hours, you and to hear is not to believe, but remember asked asked how are of, if said is known of, that you heard had even has, if told you is measured of, must then asked about is to how many hours data for Foundation of, because now certainly no anyone for had to million hours for meter of test, because this impossible, future also does not has foolish for so of test, Because it's not needed. 1000 hours of data will tell you, you don't count, because a lot of LED tube luminous efficiency is increased in 1000 hours. LED controllers and of course, when you tube as well. Now international passage of life test time is 1000 + 5,000 hours test, yiqian 1000 hours for stability time, Hou 5,000 hours data for calculation life of pursuant to, over 5,000 hours life in accordance with 5,000 hours within of intended-in curve outside push calculation. we actual test of 1+5 thousand hours of light failure for 2.2%, and is linear of, if considered some allowance, we will products standard will for 5,000 hours light failure for 2.5%, so outside push 50% light effect of life will is 100,000 hours, 70% Photosynthetic efficiency of life expectancy of 60,000 hours. But, regardless of is in accordance with 50% also is 70% calculation life are is does not important of, actually most science of is for many national by used of method is maintained as of does not below standard provides of maintained as of of life for quasi. such as GB provides fast road of maintained average as of for 20Lx, if early loaded street lamps of average as of for 30Lx, is should to 66% light effect calculation life, so calculation of life is is 66,000 hours. LED controller if plus midnight lamp control, Real time on up to 100,000 hours. of course, can we really achieve this time, may have to wait 25 years before you can know. ...